Coupled atmosphere-ocean data assimilation experiments with a low-order model and CMIP5 model data
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| 024 | 7 | 0 | |a 10.1007/s00382-014-2390-3 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s00382-014-2390-3 | ||
| 245 | 0 | 0 | |a Coupled atmosphere-ocean data assimilation experiments with a low-order model and CMIP5 model data |h [Elektronische Daten] |c [Robert Tardif, Gregory Hakim, Chris Snyder] |
| 520 | 3 | |a Coupled atmosphere-ocean data assimilation (DA) experiments are performed for estimating the Atlantic meridional overturning circulation (AMOC). Recovery of the AMOC with an ensemble Kalman filter is assessed for a range of experiments over observation availability (atmosphere, upper and deep ocean) and for assimilating high-frequency observations compared to time averages. For an idealised low-order coupled climate model, the traditional DA approach using an ensemble of model trajectories to estimate covariances is compared to a simplified "no-cycling” approach involving climatological covariances derived from a single long model integration. Robustness of the no-cycling method is also tested on data from a millennial-scale simulation of a comprehensive coupled atmosphere-ocean climate model. Results show that the no-cycling approach provides a good approximation to the traditional approach, and that assimilation of time-averaged observations improves AMOC recovery using drastically smaller ensembles than would be required for the case of instantaneous observations. Even in the limit of no ocean observations, the no-cycling approach is capable of recovering the low-frequency AMOC with time-averaged observations; assimilation of noisy instantaneous atmospheric observations fails to recover decadal-scale AMOC variability. | |
| 540 | |a The Author(s), 2014 | ||
| 690 | 7 | |a Cost-effective |2 nationallicence | |
| 690 | 7 | |a Coupled atmosphere-ocean data assimilation |2 nationallicence | |
| 690 | 7 | |a Atlantic meridional overturning circulation |2 nationallicence | |
| 690 | 7 | |a Estimation |2 nationallicence | |
| 700 | 1 | |a Tardif |D Robert |u Department of Atmospheric Sciences, University of Washington, Box 351640, 98195-1640, Seattle, WA, USA |4 aut | |
| 700 | 1 | |a Hakim |D Gregory |u Department of Atmospheric Sciences, University of Washington, Box 351640, 98195-1640, Seattle, WA, USA |4 aut | |
| 700 | 1 | |a Snyder |D Chris |u National Center for Atmospheric Research, Boulder, CO, USA |4 aut | |
| 773 | 0 | |t Climate Dynamics |d Springer Berlin Heidelberg |g 45/5-6(2015-09-01), 1415-1427 |x 0930-7575 |q 45:5-6<1415 |1 2015 |2 45 |o 382 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s00382-014-2390-3 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s00382-014-2390-3 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Tardif |D Robert |u Department of Atmospheric Sciences, University of Washington, Box 351640, 98195-1640, Seattle, WA, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Hakim |D Gregory |u Department of Atmospheric Sciences, University of Washington, Box 351640, 98195-1640, Seattle, WA, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Snyder |D Chris |u National Center for Atmospheric Research, Boulder, CO, USA |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Climate Dynamics |d Springer Berlin Heidelberg |g 45/5-6(2015-09-01), 1415-1427 |x 0930-7575 |q 45:5-6<1415 |1 2015 |2 45 |o 382 | ||
| 986 | |a SWISSBIB |b 56045466X | ||